Adaptive upper-bound pushover analysis for high-rise moment steel frames

Rahmani, Abdallah Yacine; Bourahla, Nouredine; Bento, Rita; Badaoui, Mohamed

doi:10.1016/j.istruc.2019.07.006

Cited by 23 publications

(9 citation statements)

References 39 publications

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“…There are three common analysis procedures to evaluate the structure's behavior: linear static, nonlinear dynamic and nonlinear static analysis. The linear static analysis is the most common and simplest method with the application of a single factor to accommodate dynamic effect and nonlinearity of material and geometric [15], [16]. Thus, this method cannot accurately predict the nonlinearity and dynamic effect.…”

Section: A Methodologymentioning

confidence: 99%

Behavior of Earthquake Damage Steel Structures in Fire

Suwondo¹,

Cunningham²,

Gillie³

et al. 2022

Int. J. Adv. Sci. Eng. Inf. Technol.

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Fire following an earthquake (FFE) has become a major threat for building, particularly in seismic areas. Many FFE events have caused a high level of damage and casualties. On the other hand, current design codes do not support a specific loading case for FFE. Moreover, the modern design philosophy for seismic design allows a certain level of damage that may affect the structure's vulnerability during a post-earthquake fire. Many previous studies have investigated the structural behavior of the building under FFE. This study is intended to showcase, theoretically and practically, the numerical analysis methods used in previous studies. The main objective is to improve the understanding of the performance of steel structures under a post-earthquake fire. A brief historical review of the numerical analysis methods is presented. It is observed that there are four stages of analyses adopted in the previous studies, which are structure system, earthquake analysis, fire analysis, and evaluation. However, different concepts and methods have been used in every stage. This study discusses the advantages and disadvantages of the design concept and the numerical analysis method. It was found that the key aspect of fire following an earthquake analysis is interpreting earthquake damage as an initial condition for the subsequent fire action. The 3D model is required since the composite slabs have a significant role in the frame's survival through tensile membrane action. Furthermore, several parametric fires must be considered to simulate a fire event after an earthquake. Keywords-Fire following the earthquake; thermal properties; fire engineering; mechanical properties; steel moment frame.

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Section: A Methodologymentioning

confidence: 99%

Behavior of Earthquake Damage Steel Structures in Fire

Suwondo¹,

Cunningham²,

Gillie³

et al. 2022

Int. J. Adv. Sci. Eng. Inf. Technol.

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show abstract

“…There are reports of lateral loads following an increasing triangular or uniform shape along the structure's height (Abhilash et al, 2009). However, inertial loading patterns arise with a debate about its applicability to seismic demands (Rahmani et al, 2019). In order to consider this effect, a lateral load pattern could be proportional to the main mode of vibration of the structure (R & S, 2000).…”

Section: Load Pattern Applied For the Non-linear Analysismentioning

confidence: 99%

Influence of an extensive green roof in the non-linear structural behavior of self - construction households

Contreras

Núñez

2021

Rev. ing. constr.

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In recent years, ideas such as green roofs gained importance as an alternative for environmental adaptation of society to new ambient conditions. In Bogotá city, the roofs at popular neighborhood represent a potential area for their implementation. This present research discusses how the weight of a green roof impacts a selfconstruction dwelling unit from a structural capacity demand point of view. Green roof weight is a random variable whose normality was investigated through the Shapiro-Wilk goodness of fit. The magnification factors for this dead-like load come from the Nowak-Collins method using the confidence intervals on the mean weight value. The ATC-40 pushover methodology helped in finding the non-linear behavior of a controlled but similar structure as those found in the popular neighborhoods of Bogotá city. According to this methodology, damage caused on these structures due to seismic demand increases by the green roof incorporation. However, damage increase is a function of local soil conditions.

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“…Additionally, compatible lateral displacements are used instead of lateral forces in static pushover analysis. This procedure's main advantage is that the applied lateral displacements are directly determined by a modal analysis [63][64][65][66][67][68][69]. This procedure can be expressed under four main headings: (i) definition of nominal load vector and inertia mass, (ii) computation of load factor, (iii) calculation of normalized scaling vector, and (iv) update of loading displacement vector [70].…”

Section: Comparison Of Structural Analysesmentioning

confidence: 99%

The Effect of Site-Specific Design Spectrum on Earthquake-Building Parameters: A Case Study from the Marmara Region (NW Turkey)

et al. 2020

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The Marmara Region (NW Turkey) has experienced significant earthquakes (M > 7.0) to date. A destructive earthquake is also expected in the region. To determine the effect of the specific design spectrum, eleven provinces located in the region were chosen according to the Turkey Earthquake Building Code updated in 2019. Additionally, the differences between the previous and updated regulations of the country were investigated. Peak Ground Acceleration (PGA) and Peak Ground Velocity (PGV) were obtained for each province by using earthquake ground motion levels with 2%, 10%, 50%, and 68% probability of exceedance in 50-year periods. The PGA values in the region range from 0.16 to 0.7 g for earthquakes with a return period of 475 years. For each province, a sample of a reinforced-concrete building having two different numbers of stories with the same ground and structural characteristics was chosen. Static adaptive pushover analyses were performed for the sample reinforced-concrete building using each province’s design spectrum. The variations in the earthquake and structural parameters were investigated according to different geographical locations. It was determined that the site-specific design spectrum significantly influences target displacements for performance-based assessments of buildings due to seismicity characteristics of the studied geographic location.

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Adaptive upper-bound pushover analysis for high-rise moment steel frames

Cited by 23 publications

References 39 publications

Behavior of Earthquake Damage Steel Structures in Fire

Behavior of Earthquake Damage Steel Structures in Fire

Influence of an extensive green roof in the non-linear structural behavior of self - construction households

The Effect of Site-Specific Design Spectrum on Earthquake-Building Parameters: A Case Study from the Marmara Region (NW Turkey)

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